Home / 3,689.64-5,535.18-1,225.20

Finding the Fourth Proportional to 3,689.64, 5,535.18 and 1,225.20

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Solution

The fourth proportional to 3,689.64, 5,535.18 and 1,225.20 is: 1,838.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.64 : 5,535.18 = 1,225.20 : x
  2. Step 2: Convert to fraction form
    3,689.64/5,535.18 = 1,225.20/x
  3. Step 3: Cross multiply
    3,689.64x = 5,535.18 × 1,225.20
  4. Step 4: Simplify right side
    3,689.64x = 6,781,702.54
  5. Step 5: Solve for x
    x = 6,781,702.54/3,689.64
  6. Step 6: Final answer
    x = 1,838.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.